vmparam.h revision 232449
129759Swollman/* $OpenBSD: vmparam.h,v 1.2 1998/09/15 10:50:12 pefo Exp $ */ 229759Swollman/* $NetBSD: vmparam.h,v 1.5 1994/10/26 21:10:10 cgd Exp $ */ 329759Swollman 429759Swollman/* 529759Swollman * Copyright (c) 1988 University of Utah. 629759Swollman * Copyright (c) 1992, 1993 729759Swollman * The Regents of the University of California. All rights reserved. 829759Swollman * 929759Swollman * This code is derived from software contributed to Berkeley by 1029759Swollman * the Systems Programming Group of the University of Utah Computer 1129759Swollman * Science Department and Ralph Campbell. 1229759Swollman * 1329759Swollman * Redistribution and use in source and binary forms, with or without 1429759Swollman * modification, are permitted provided that the following conditions 15226396Sed * are met: 1629759Swollman * 1. Redistributions of source code must retain the above copyright 1729759Swollman * notice, this list of conditions and the following disclaimer. 1829759Swollman * 2. Redistributions in binary form must reproduce the above copyright 1929759Swollman * notice, this list of conditions and the following disclaimer in the 2029759Swollman * documentation and/or other materials provided with the distribution. 2129759Swollman * 4. Neither the name of the University nor the names of its contributors 2229759Swollman * may be used to endorse or promote products derived from this software 2329759Swollman * without specific prior written permission. 2429759Swollman * 2529759Swollman * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 2629759Swollman * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 2729759Swollman * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 2829759Swollman * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 2950477Speter * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 3029759Swollman * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 3129759Swollman * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 3229759Swollman * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 3329759Swollman * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 3429759Swollman * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 3529759Swollman * SUCH DAMAGE. 3629759Swollman * 3729759Swollman * from: Utah Hdr: vmparam.h 1.16 91/01/18 3829759Swollman * @(#)vmparam.h 8.2 (Berkeley) 4/22/94 3929759Swollman * JNPR: vmparam.h,v 1.3.2.1 2007/09/10 06:01:28 girish 4029759Swollman * $FreeBSD: head/sys/mips/include/vmparam.h 232449 2012-03-03 08:19:18Z jmallett $ 4187715Smarkm */ 4229759Swollman 4329759Swollman#ifndef _MACHINE_VMPARAM_H_ 4429759Swollman#define _MACHINE_VMPARAM_H_ 45 46/* 47 * Machine dependent constants mips processors. 48 */ 49 50/* 51 * Virtual memory related constants, all in bytes 52 */ 53#ifndef MAXTSIZ 54#define MAXTSIZ (128UL*1024*1024) /* max text size */ 55#endif 56#ifndef DFLDSIZ 57#define DFLDSIZ (128UL*1024*1024) /* initial data size limit */ 58#endif 59#ifndef MAXDSIZ 60#define MAXDSIZ (1*1024UL*1024*1024) /* max data size */ 61#endif 62#ifndef DFLSSIZ 63#define DFLSSIZ (8UL*1024*1024) /* initial stack size limit */ 64#endif 65#ifndef MAXSSIZ 66#define MAXSSIZ (64UL*1024*1024) /* max stack size */ 67#endif 68#ifndef SGROWSIZ 69#define SGROWSIZ (128UL*1024) /* amount to grow stack */ 70#endif 71 72/* 73 * Mach derived constants 74 */ 75 76/* user/kernel map constants */ 77#define VM_MIN_ADDRESS ((vm_offset_t)0x00000000) 78#define VM_MAX_ADDRESS ((vm_offset_t)(intptr_t)(int32_t)0xffffffff) 79 80#define VM_MINUSER_ADDRESS ((vm_offset_t)0x00000000) 81 82#ifdef __mips_n64 83#define VM_MAXUSER_ADDRESS (VM_MINUSER_ADDRESS + (NPDEPG * NBSEG)) 84#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xc000000000000000) 85#define VM_MAX_KERNEL_ADDRESS (VM_MIN_KERNEL_ADDRESS + (NPDEPG * NBSEG)) 86#else 87#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x80000000) 88#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)0xC0000000) 89#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)0xFFFFC000) 90#endif 91 92#define KERNBASE ((vm_offset_t)(intptr_t)(int32_t)0x80000000) 93/* 94 * USRSTACK needs to start a little below 0x8000000 because the R8000 95 * and some QED CPUs perform some virtual address checks before the 96 * offset is calculated. 97 */ 98#define USRSTACK (VM_MAXUSER_ADDRESS - PAGE_SIZE) 99#ifdef __mips_n64 100#define FREEBSD32_USRSTACK (((vm_offset_t)0x80000000) - PAGE_SIZE) 101#endif 102 103/* 104 * Only one memory domain. 105 */ 106#ifndef VM_NDOMAIN 107#define VM_NDOMAIN 1 108#endif 109 110/* 111 * Disable superpage reservations. (not sure if this is right 112 * I copied it from ARM) 113 */ 114#ifndef VM_NRESERVLEVEL 115#define VM_NRESERVLEVEL 0 116#endif 117 118/* virtual sizes (bytes) for various kernel submaps */ 119#ifndef VM_KMEM_SIZE 120#define VM_KMEM_SIZE (12 * 1024 * 1024) 121#endif 122 123/* 124 * How many physical pages per KVA page allocated. 125 * min(max(VM_KMEM_SIZE, Physical memory/VM_KMEM_SIZE_SCALE), VM_KMEM_SIZE_MAX) 126 * is the total KVA space allocated for kmem_map. 127 */ 128#ifndef VM_KMEM_SIZE_SCALE 129#define VM_KMEM_SIZE_SCALE (3) 130#endif 131 132/* 133 * Ceiling on amount of kmem_map kva space. 134 */ 135#ifndef VM_KMEM_SIZE_MAX 136#define VM_KMEM_SIZE_MAX (200 * 1024 * 1024) 137#endif 138 139/* initial pagein size of beginning of executable file */ 140#ifndef VM_INITIAL_PAGEIN 141#define VM_INITIAL_PAGEIN 16 142#endif 143 144#define UMA_MD_SMALL_ALLOC 145 146/* 147 * max number of non-contig chunks of physical RAM you can have 148 */ 149#define VM_PHYSSEG_MAX 32 150 151/* 152 * The physical address space is sparsely populated. 153 */ 154#define VM_PHYSSEG_SPARSE 155 156/* 157 * Create three free page pools: VM_FREEPOOL_DEFAULT is the default pool 158 * from which physical pages are allocated and VM_FREEPOOL_DIRECT is 159 * the pool from which physical pages for small UMA objects are 160 * allocated. 161 */ 162#define VM_NFREEPOOL 3 163#define VM_FREEPOOL_CACHE 2 164#define VM_FREEPOOL_DEFAULT 0 165#define VM_FREEPOOL_DIRECT 1 166 167/* 168 * we support 2 free lists: 169 * 170 * - DEFAULT for direct mapped (KSEG0) pages. 171 * Note: This usage of DEFAULT may be misleading because we use 172 * DEFAULT for allocating direct mapped pages. The normal page 173 * allocations use HIGHMEM if available, and then DEFAULT. 174 * - HIGHMEM for other pages 175 */ 176#ifdef __mips_n64 177#define VM_NFREELIST 1 178#define VM_FREELIST_DEFAULT 0 179#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT 180#else 181#define VM_NFREELIST 2 182#define VM_FREELIST_DEFAULT 1 183#define VM_FREELIST_HIGHMEM 0 184#define VM_FREELIST_DIRECT VM_FREELIST_DEFAULT 185#define VM_HIGHMEM_ADDRESS ((vm_paddr_t)0x20000000) 186#endif 187 188/* 189 * The largest allocation size is 1MB. 190 */ 191#define VM_NFREEORDER 9 192 193#define ZERO_REGION_SIZE (64 * 1024) /* 64KB */ 194 195#endif /* !_MACHINE_VMPARAM_H_ */ 196